Subject
- Colors2
- Colors--Analysis1
- Corporations4
- Currency question4
- Curtius1
- Dye industry7
- Dyes and dyeing15
- Dyes and dyeing--Chemistry2
- Dyes and dyeing--Cotton4
- Dyes and dyeing--Equipment and supplies1
- Dyes and dyeing--Feathers1
- Dyes and dyeing--Silk1
- Dyes and dyeing--Textile fibers6
- Dyes and dyeing--Wool6
- Farbenfabriken Bayer Aktiengesellschaft1
- Farbenfabriken vorm. Friedrich Bayer & Co.3
- Farbwerke vorm. Meister Lucius & Brüning1
- Feathers1
- Friedrich Bayer & Co.3
- Hoechst AG1